20951836

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{673}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 37781744

約数和(自身を除く): 16829908

約数列:

[1, 2, 4, 43, 86, 172, 181, 362, 673, 724, 1346, 2692, 7783, 15566, 28939, 31132, 57878, 115756, 121813, 243626, 487252, 5237959, 10475918, 20951836]

約数ペア:

[(1, 20951836), (2, 10475918), (4, 5237959), (43, 487252), (86, 243626), (172, 121813), (181, 115756), (362, 57878), (673, 31132), (724, 28939), (1346, 15566), (2692, 7783)]